Creating Truffle Mac and Cheese is straightforward if you follow these simple steps:

1. Cook the Pasta: In a large pot, bring salted water to a boil. Add the elbow macaroni and cook until al dente, following package instructions. Drain and set aside.
2. Make the Roux: In the same pot, melt the butter over medium heat. Stir in the flour and cook for about 1 minute, stirring constantly until it forms a paste.
3. Add Milk: Gradually whisk in the whole milk, ensuring there are no lumps. Continue to cook, stirring frequently, until the mixture thickens and begins to bubble.
4. Incorporate Cheeses: Reduce the heat to low and stir in the cheddar, Gruyère, and Parmesan cheeses. Mix until the cheeses are fully melted and the sauce is smooth.
5. Season: Add the truffle oil, salt, and pepper to taste. Adjust the seasoning based on your preference.
6. Combine with Pasta: Add the cooked macaroni to the cheese sauce, stirring until the pasta is evenly coated.
7. Prepare for Baking: Preheat the oven to 350°F (175°C). Transfer the mac and cheese mixture to a greased baking dish.
8. Add Topping: Sprinkle the breadcrumbs evenly over the top of the mac and cheese.
9. Bake: Place the dish in the preheated oven and bake for 15 minutes, or until the top is golden brown and crispy.
10. Serve: Remove from the oven and let it sit for a few minutes before serving. Garnish with fresh parsley for an added touch.

By following these steps, you’ll create an incredible Truffle Mac and Cheese that is sure to delight your taste buds!